Olive-backed Tailorbird (Orthotomus sepium) [XC613529]
by Simon Elliott from Kecamatan Bogor Barat (near Bogor), Kota Bogor, Jawa Barat, Indonesia (song)
Olive-backed Tailorbird (Orthotomus sepium) [XC403743]
by Frank Lambert from Morong (near Subic Bay Freeport Zone), Bataan, Central Luzon, Philippines (song)
Subspecies
Formerly considered conspecific with Ashy Tailorbird (Orthotomus ruficeps), but the two behave as separate species where they meet (in Java). For some time there was much confusion over the names of these two and Rufous-tailed Tailorbird (Orthotomus sericeus). As a consequence, some statements in recent literature are incorrect or require confirmation.
The following 2 subspecies are recognised:
sundaicus Hoogerwerf, 1962 - Panaitan I (western Java).